Home / 155,516.94-214,620.20-87,538.30

Finding the Fourth Proportional to 155,516.94, 214,620.20 and 87,538.30

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Solution

The fourth proportional to 155,516.94, 214,620.20 and 87,538.30 is: 120,806.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,516.94 : 214,620.20 = 87,538.30 : x
  2. Step 2: Convert to fraction form
    155,516.94/214,620.20 = 87,538.30/x
  3. Step 3: Cross multiply
    155,516.94x = 214,620.20 × 87,538.30
  4. Step 4: Simplify right side
    155,516.94x = 18,787,487,453.66
  5. Step 5: Solve for x
    x = 18,787,487,453.66/155,516.94
  6. Step 6: Final answer
    x = 120,806.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.